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