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