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