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