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