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