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)(19,23)(20,24)(21,22)(25,26)(27,32)(28,30)(29,31)(2,5)(6,8)(17,19)(18,20)(21,24)(22,23)(25,27,29,28)(26,30,31,32)(3,7)(6,8)(18,22)(20,23)(27,28)(30,32) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,10)(11,13)(12,14)(15,16)(17,19)(18,20)(21,24)(22,23)(25,26)(27,32)(28,30)(29,31) involution — undirected(1,3,4,7)(2,6,5,8)(9,11,12,15)(10,13,14,16)(17,20)(18,19)(21,23)(22,24)(25,28,29,27)(26,30,31,32)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.