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