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