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