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