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