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