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