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