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