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