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