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