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