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)(11,13)(12,14)(15,16)(17,18,23,27)(19,28,30,20)(21,26,22,25)(24,31,32,29)(9,10)(11,15)(12,14)(13,16)(17,19,23,30)(18,24,27,32)(20,25,28,26)(21,29,22,31)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,19)(18,20)(21,31)(22,29)(23,30)(24,26)(25,32)(27,28)(11,16)(13,15)(17,20,23,28)(18,19,27,30)(21,24,22,32)(25,29,26,31)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,21,23,22)(18,25,27,26)(19,29,30,31)(20,24,28,32)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.