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