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