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