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