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