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