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