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