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