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