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