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