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)(13,14,18,22)(15,19,24,31)(16,20,27,34)(17,21,28,35)(23,30,38,42)(25,32,39,43)(26,33,29,36)(37,41,40,44)(1,2)(3,4)(6,10)(11,12)(16,26)(17,28)(20,33)(21,35)(23,37)(25,39)(27,29)(30,41)(32,43)(34,36)(38,40)(42,44) involution — undirected(2,4)(13,15,18,24)(14,19,22,31)(16,23,27,38)(17,25,28,39)(20,30,34,42)(21,32,35,43)(26,37,29,40)(33,41,36,44)(2,4)(5,7,9,8)(6,11,10,12)(13,16,18,27)(14,20,22,34)(15,23,24,38)(17,29,28,26)(19,30,31,42)(21,36,35,33)(25,40,39,37)(32,44,43,41)(5,8,9,7)(6,11,10,12)(15,24)(19,31)(23,38)(25,39)(30,42)(32,43)(37,40)(41,44)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.