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