My first tab, but this is some accurate stuff.
[ Tab from: http://www.guitaretab.com/j/john-mayer/204597.html ]
e-8/10--8/10-13-12-10-8-----8/10--8/10-13-12-10-8-----------------|
b-8/10--8/10----13-10-8-10--8/10--8/10----13-10-8-12--11h12h12----|
g-----------------------10------------------------12----------12--|
d-----------------------------------------------------------------|
a-----------------------------------------------------------------|
E-----------------------------------------------------------------|
e-12----88-10-12-13-10------------17-20---------------------------|
b----/10---------------10b-8-8-10------20-------------------------|
g---------------------------9-------------------------------------|
d-----------------------------------------------------------------|
a-----------------------------------------------------------------|
E-----------------------------------------------------------------|