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