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