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