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