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