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