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