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