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