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