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