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