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