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