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