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