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