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