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