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