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)(17,18,21,19,22,25,28,23)(20,24,27,26,29,31,32,30)(2,5)(6,8)(18,23)(19,25)(20,27)(21,28)(26,30)(29,32) involution — undirected(1,3,4,7)(2,6,5,8)(10,13)(14,16)(17,19,21,25,22,23,28,18)(20,26,27,31,29,30,32,24)(17,20,28,32,22,29,21,27)(18,24,23,30,25,31,19,26)(9,11,12,15)(10,14,13,16)(18,25)(19,23)(24,31)(26,30)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.