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