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