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