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)(11,15)(12,13)(14,16)(17,18,23,19)(20,27,30,28)(21,22,26,29)(24,32,25,31)(2,6)(7,8)(9,10)(11,14)(12,13)(15,16)(17,19,23,18)(20,28,30,27)(21,29,26,22)(24,31,25,32)(1,3,5,4)(2,7,6,8)(10,13)(14,15)(17,20,29,32,23,30,22,31)(18,24,26,28,19,25,21,27)(9,11,12,16)(10,14,13,15)(17,21,22,19,23,26,29,18)(20,28,31,24,30,27,32,25)(1,4,5,3)(2,7,6,8)(20,30)(24,25)(27,28)(31,32)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.