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