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