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