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