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