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