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