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