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