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