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