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