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