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