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