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