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