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