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