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