One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,6)(7,8)(9,10)(11,14)(12,16)(13,15)(17,18,22,25,21,20,24,29)(19,23,27,30,26,28,31,32)(1,3,4,7)(2,5,6,8)(9,11,14,10)(12,16,13,15)(17,19,21,26)(18,23,20,28)(22,27,24,31)(25,30,29,32)(2,6)(5,8)(9,12,14,13)(10,15,11,16)(18,20)(19,26)(25,29)(27,31)(9,12,14,13)(10,16,11,15)(18,20)(23,28)(25,29)(30,32)(9,13,14,12)(10,16,11,15)(17,20,22,29,21,18,24,25)(19,23,27,30,26,28,31,32)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.