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