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