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