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