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