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