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