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