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