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)(17,18,24,19)(20,30,31,32)(21,26,25,29)(22,27,23,28)(1,3,5,4)(2,6,8,7)(9,11,14,12)(10,15,13,16)(17,19,22,27,24,18,23,28)(20,21,29,30,31,25,26,32)(1,3,5,4)(2,7,8,6)(9,10,14,13)(11,16,12,15)(17,20,22,29,24,31,23,26)(18,25,28,32,19,21,27,30)(1,3,5,4)(2,7,8,6)(9,12,14,11)(10,15,13,16)(17,21)(18,26)(19,29)(20,28)(22,30)(23,32)(24,25)(27,31)(1,4,5,3)(2,6,8,7)(9,13,14,10)(11,16,12,15)(17,22,24,23)(18,27,19,28)(20,29,31,26)(21,32,25,30)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.