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