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