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