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