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)(15,25)(16,17)(18,22)(19,23)(20,24)(21,26)(27,28)(5,7,9,12)(6,10,8,11)(13,15,20,26)(14,21,24,25)(16,27,18,23)(17,19,22,28)(2,3)(13,16,20,18)(14,17,24,22)(15,23,26,27)(19,21,28,25)(1,3,4,2)(5,6,9,8)(7,10,12,11)(13,17,20,22)(14,16,24,18)(15,19,26,28)(21,27,25,23)(5,8,9,6)(7,11,12,10)(13,18,20,16)(14,22,24,17)(15,23,26,27)(19,21,28,25)(13,19)(14,23)(15,22)(16,21)(17,26)(18,25)(20,28)(24,27) 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.