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)(13,14,17,20,18,22,16,21)(15,23,26,28,27,25,24,19)(5,6)(7,11)(8,10)(9,12)(13,15,18,27)(14,19,22,28)(16,26,17,24)(20,25,21,23)(2,4)(5,7,8,12)(6,9,10,11)(13,16,18,17)(14,20,22,21)(15,24,27,26)(19,23,28,25)(7,12)(9,11)(13,14,16,21,18,22,17,20)(15,25,24,28,27,23,26,19)(6,10)(9,11)(13,16,18,17)(14,21,22,20)(15,24,27,26)(19,25,28,23)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.