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