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