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