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