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