The riff goes something like this to start:
E|-x-x-3-x-x-3-x-x-3-x-x-5-x-x-3--x-x-3-x-x-3-x-x-3-x-x-5--|
B|-x-x-3-x-x-3-x-x-3-x-x(3)x-x-3--x-x-3-x-x-3-x-x-3-x-x(3)-|
G|---------------------------------------------------------|
D|---------------------------------------------------------|
A|---------------------------------------------------------|
E|---------------------------------------------------------|

Then it repeats like this:
E|-3-3-3-x-3-3-x-x-5-x-x-3--x-x-3-x-x-3-x-x-3-x-x-5-x-x-3-|
B|-3-3-3-x-x-3-x-x(3)x-x-3--x-x-3-x-x-3-x-x-3-x-x(3)x-x-3-|
G|-3-3-3--------------------------------------------------|
D|--------------------------------------------------------|
A|--------------------------------------------------------|
E|--------------------------------------------------------|

The lead behind it:
E|-5-4-3--5-4-3--|
B|---------------|
G|---------------|
D|---------------|
A|---------------|
E|---------------|

There is a faint riff Fripp plays behind the chorus:
E|---------------|
B|-8--8--8--8--8-|
G|---------------|
D|---------------|
A|---------------|
E|---------------|