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