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