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