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