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