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)(17,30)(22,38)(26,32)(29,33)(31,43)(36,39)(40,44)(41,42) involution — undirected(5,7,8,12)(6,9,10,11)(13,14)(15,24)(16,21)(17,31)(18,34)(19,23)(20,25)(22,33)(26,39)(27,35)(28,37)(29,38)(30,43)(32,36)(40,41)(42,44)(2,4)(7,12)(9,11)(13,15,18,25,19,27,16,28)(14,20,21,24,23,37,34,35)(17,32,33,42,30,26,29,41)(22,39,31,44,38,36,43,40)(6,10)(9,11)(13,16,19,18)(14,21,23,34)(15,25,27,28)(17,29,30,33)(20,35,37,24)(22,31,38,43)(26,41,32,42)(36,44,39,40)(13,17,18,33,19,30,16,29)(14,22,21,31,23,38,34,43)(15,26,25,41,27,32,28,42)(20,36,24,40,37,39,35,44)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.