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