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