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