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