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