Unlike many of the other pilgrims in The Canterbury Tales, the Franklin's clothing is not described in great detail. The only mention of his apparel appears at the end of Chaucer's introduction of him in the Prologue:
A dagger and a little purse of silk
Hung at his girdle, white as morning milk.
So we know the Franklin wore a white sash, to which he had attached a dagger and a silk purse. The only other physical description of the Franklin is that he had a white beard and that he was "high-colored," suggesting that he had a rosy complexion. Below you will find a link to an eNotes site that shows a picture of the Franklin, as well as other pilgrims.