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