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