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