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