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