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