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