You can find stories taken from the Legenda Aurea here at the Bestiaria Latina website:

• Philippus et Draco

The Latin text of the Legenda Aurea is not available online. Latin texts from the Legenda at this website are transcribed from:

You can find an English translation here:

The GOLDEN LEGEND or LIVES of the SAINTS
Compiled by Jacobus de Voragine, Archbishop of Genoa, 1275 First Edition Published 1470. ENGLISHED by WILLIAM CAXTON, First Edition 1483. From the Temple Classics Edited by F.S. ELLIS. First issue of this Edition, 1900 Reprinted 1922, 1931.