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