One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(11,15)(14,16)(17,18)(19,24)(20,25)(21,23)(22,26)(27,30)(28,31)(29,32)(10,13)(11,15)(18,23)(20,24)(21,30)(25,32)(26,27)(29,31) involution — undirected(2,5)(6,8)(9,10)(11,14)(12,13)(15,16)(17,19,22,28)(18,24,26,31)(20,27,29,23)(21,25,30,32)(1,3,4,7)(2,6,5,8)(10,13)(14,16)(17,20)(18,25)(19,27)(21,31)(22,29)(23,28)(24,30)(26,32)(9,11,12,15)(10,14,13,16)(18,26)(19,28)(23,27)(25,32)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.