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