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