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