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