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