I couldn't find an accurate tab anywhere so I wrote my own. It's %99.9.
Intro/Verse v1 - x3
e|----------------------|
B|----------------------|
G|----------------------|
D|-----5----5--------4--|
A|--------7----7---5----|
E|--0------------0------|
Verse v1 Ending - x1
e|---------------------------------|
B|---------------------------------|
G|------------------------0--------|
D|------5----5--------4-----4---4--|
A|---------7----7---5---5-----5----|
E|--0-------------0----------------|
Intro/Verse v1 - x1
Verse v1 Ending - x1
Intro/Verse v1 - x3
Verse v1 Ending - x1
Verse v2 - x4
e|----------------------------------------|
B|----------------------------------------|
G|----------0---------------0-------------|
D|------5-----5---5-----4-----4---4----4--|
A|----7---7-----7-----5---5-----5---5-----|
E|--0---------------0---------------------|
Chorus - x3
e|--------------------|
B|--------------------|
G|--------------------|
D|--------5--7--5-44--|
A|------7-------------|
E|--0-----------------|
[ Tab from: http://www.guitaretab.com/g/grey-daze/102146.html ]
Chorus Ending v1 - x1
e|---------------------------|
B|---------------------------|
G|---------------------------|
D|--------5--7--5-44---------|
A|------7------------77-55~--|
E|--0------------------------|
Chorus - x3
Chorus Ending v2 - x1
e|----------------------------|
B|----------------------------|
G|----------------------------|
D|--------5--7--5-44----------|
A|------7------------77-55/7--|
E|--0-------------------------|
Verse v1 - x3
Verse Ending - x1
Verse v1 - x3
Verse Ending - x1
Verse v2 - x4
Chorus - x3
Chorus Ending v1 - x1
Chorus - x3
Chorus Ending v3 - x1
Break - x1
e|---------------------|
B|---------------------|
G|---------------------|
D|---------------------|
A|--7h9-5-5h7-3-3h5-2--|
E|---------------------|
Solo - x1
e|------------------------------------------------------------------------|
B|------------------------------------------------------------------------|
G|------------------------------------------------------------------------|
D|------------------------------------------------------------------------|
A|--77777777777777-99-55555555555555-77-33333333333333-55-22222222222222--|
E|------------------------------------------------------------------------|
Chorus - x3
Chorus Ending v2 - x1
Chorus - x3
Outro - x1
e|-----|
B|-----|
G|-----|
D|--9--|
A|--9--|
E|--7--|