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