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