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