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