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)(15,20)(16,29)(17,22)(18,23)(19,24)(21,32)(25,41)(26,36)(27,37)(28,38)(30,44)(31,39)(33,40)(34,42)(35,43) involution — undirected(1,2,3,4)(13,15)(14,20)(16,30)(17,25)(18,27)(19,34)(21,36)(22,41)(23,37)(24,42)(26,32)(28,31)(29,44)(33,43)(35,40)(38,39)(6,9)(10,12)(13,16,31,33,18,32,19,17)(14,21,39,22,23,29,24,40)(15,25,34,26,27,43,28,30)(20,35,42,44,37,41,38,36)(13,17,19,32,18,33,31,16)(14,22,24,21,23,40,39,29)(15,26,28,25,27,30,34,43)(20,36,38,41,37,44,42,35)(5,7,8,11)(6,10,9,12)(14,23)(20,37)(21,29)(22,40)(24,39)(35,41)(36,44)(38,42)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.