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