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