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