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