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