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