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