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