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