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