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