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