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