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