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