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