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