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