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