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