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