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