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