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