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