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