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