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)(15,20)(16,21)(17,22)(18,24)(19,23)(25,33)(26,34)(27,39)(28,35)(29,36)(30,37)(31,38)(32,40)(41,43)(42,44) involution — undirected(6,9)(7,11)(13,15)(14,20)(16,29)(17,26)(18,27)(19,28)(21,36)(22,34)(23,35)(24,39)(25,30)(31,41)(32,42)(33,37)(38,43)(40,44) involution — undirected(2,4)(13,16,19,31)(14,21,23,38)(15,25,28,42)(17,30,18,32)(20,33,35,44)(22,37,24,40)(26,41,27,29)(34,43,39,36)(6,9)(10,12)(13,17,19,18)(14,22,23,24)(15,26,28,27)(16,30,31,32)(20,34,35,39)(21,37,38,40)(25,41,42,29)(33,43,44,36)(5,7,8,11)(6,10,9,12)(14,23)(15,27)(17,18)(20,34)(21,38)(25,29)(26,28)(30,32)(33,43)(35,39)(36,44)(41,42)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.