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)(17,18,23,28)(19,26,20,31)(21,25,30,24)(22,32,29,27)(1,2)(3,4)(10,13)(14,16)(17,19,29,21,23,20,22,30)(18,24,32,31,28,25,27,26)(2,4)(9,11)(10,14)(12,15)(13,16)(17,20,23,19)(18,25,28,24)(21,22,30,29)(26,32,31,27)(6,8)(11,15)(14,16)(17,21,22,19,23,30,29,20)(18,26,27,25,28,31,32,24)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.