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