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