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