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