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