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