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