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