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