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