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