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