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