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