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