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