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