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