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