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