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