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