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