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