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