Figured out the main riff while messing around, and figured I'd do the rest.
The palm mutes' places are pretty obvious so I don't feel the need to write them in.
Here the riffs are tabbed, and at the bottom it lists the order that they go in.
Intro/Main Riff
|------------------------------|
|------------------------------|
|------------------------------|
|------------------------------|
|------------------------------|
|--000-777-888-101010----------|
Verse/Outro
|------------------------------------------------------------------|
|------------------------------------------------------------------|
|------------------------------------------------------------------|
|---9------11-----12-11-12-------------9------11-----12--15---14---|
|---7------9------10-9--10-------------7------9------10--13---12---|
|-----000-----000----------0000----------000-----000---0---000--0--|
[ Tab from: http://www.guitaretab.com/s/slayer/210784.html ]
Chorus
|-----------------------------------------------|
|-----------------------------------------------|
|-----------------------------------------------|
|-----------------------------------------------|
|-----------------------------------------------|
|--0000-3333-2222-1100--0000-3333-2222-111------|
Other Solo Backing
|------------------------------------------------|
|------------------------------------------------|
|------------------------------------------------|
|------------------------------------------------|
|------------------------------------------------|
|--0000-10101010-9999-8888-0000-3333-66666666----|
Bridge
|------------------------|
|------------------------|
|------------------------|
|--2---4-3-2-3-2---2-----|
|--2-------------4---4-3-|
|--0---------------------|
Where the riffs go in the song
Intro x6
Verse x4
Chorus x2
Verse x4
Chorus x2
Main Riff x24
Other Solo Backing x3
Bridge x8
Main Riff x8
Chorus x2
Outro x4