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