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