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