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