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