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