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