One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,18,21,20,22,24,30,29)(19,23,27,28,25,31,32,26)(1,3,6,2)(4,7,5,8)(11,16)(13,15)(9,11,12,16)(10,13,14,15)(17,19,21,27,22,25,30,32)(18,23,20,28,24,31,29,26)(1,4,6,5)(2,7,3,8)(10,14)(13,15)(19,25)(23,31)(26,28)(27,32)(1,5,6,4)(2,7,3,8)(17,20,21,24,22,29,30,18)(19,26,27,23,25,28,32,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.