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