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