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