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