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