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