Captain Richard Roberts, the commander of Astor's yacht 'Noma', said that apart from some slight discolouration by water, Astor's features were mostly unharmed; Gerald Ross, an electrician on the Mackay-Bennett, reported that Astor's "face was swollen, one jaw was injured."
Astor was buried in Trinity Church Cemetery in Manhattan, New York City. (His DNA was matched to that of his first son Vincent and second son John Jacob 'Jakey' born to his surviving widow Madeleine Astor, four months after Titanic sank. Trace DNA also matched to his grandson William Backhouse Aston III, (Jakey's son).
It's odd the info I saw, more than one source, openly said he was never found.