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