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