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