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