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