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