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