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)(17,18,21,23,22,25,20,26)(19,24,27,30,28,31,29,32)(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)(17,19,20,29,22,28,21,27)(18,24,26,32,25,31,23,30)(17,19,20,29,22,28,21,27)(18,24,26,32,25,31,23,30)(9,11,12,15)(10,14,13,16)(18,25)(19,28)(23,26)(27,29)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.