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