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