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