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