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)(15,23)(16,28)(17,33)(18,35)(19,22)(20,26)(21,30)(24,34)(25,41)(27,40)(29,38)(31,36)(32,39)(37,43)(42,44) involution — undirected(2,3)(5,6)(7,10)(8,9)(11,12)(13,15,18,26,19,27,34,17)(14,20,24,23,22,33,35,40)(16,29,32,31,30,25,42,43)(21,37,39,41,28,36,44,38)(1,2,4,3)(6,9)(10,11)(13,16)(14,21)(15,25)(17,31)(18,32)(19,30)(20,36)(22,28)(23,38)(24,39)(26,43)(27,29)(33,37)(34,42)(35,44)(40,41)(1,3,4,2)(5,7,8,12)(6,10,9,11)(14,22)(16,30)(20,33)(23,40)(24,35)(25,29)(31,43)(32,42)(13,17,34,27,19,26,18,15)(14,23,35,20,22,40,24,33)(16,31,42,29,30,43,32,25)(21,38,44,36,28,41,39,37)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.