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