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