One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(7,11)(10,12)(13,14,17,21,18,22,30,36)(15,23,25,32,26,35,29,19)(16,20,28,34,27,33,40,43)(24,37,39,42,38,44,41,31)(5,6)(7,10)(8,9)(11,12)(13,15,18,26)(14,19,22,32)(16,24,27,38)(17,29,30,25)(20,31,33,42)(21,35,36,23)(28,41,40,39)(34,44,43,37)(2,4)(6,9)(10,12)(16,27)(20,33)(24,38)(28,40)(31,42)(34,43)(37,44)(39,41) involution — undirected(6,9)(10,12)(13,16,18,27)(14,20,22,33)(15,24,26,38)(17,28,30,40)(19,31,32,42)(21,34,36,43)(23,37,35,44)(25,39,29,41)(5,7,8,11)(6,10,9,12)(16,27)(20,33)(24,38)(28,40)(31,42)(34,43)(37,44)(39,41)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.