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