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