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)(19,24)(20,22)(21,29)(23,26)(25,31)(27,30)(28,32) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,10,13,14)(11,15,12,16)(17,19,23,20)(18,24,26,22)(21,27,31,28)(25,32,29,30)(2,5)(6,8)(17,20,23,19)(18,24,26,22)(21,28,31,27)(25,32,29,30)(9,11,13,12)(10,15,14,16)(17,21)(18,25)(19,27)(20,28)(22,30)(23,31)(24,32)(26,29)(1,2)(3,6)(4,5)(7,8)(17,22,23,24)(18,20,26,19)(21,30,31,32)(25,28,29,27)(1,3)(2,6)(4,7)(5,8)(9,12,13,11)(10,16,14,15)(17,21)(18,25)(19,27)(20,28)(22,30)(23,31)(24,32)(26,29)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.