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