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