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