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