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