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