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