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