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