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