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