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