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