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