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