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