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