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