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