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