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