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