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