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