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