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