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