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