I don't think a proprietor will be considered as a director drawing a salary. Of course, the proprietor is entitled to out-of-pocket expenses, entertainment expenses, etc., and drawings for personal or domestic use. However, drawings alone cannot be treated as expenses of the firm, as all drawings will be accounted for in the proprietor's capital account, not in the profit and loss account, treating them as expenses of the firm.
My suggestions are, instead of 'as salary,' you may draw money from the firm as 'drawings' and account for various expenses that you incur as expenses such as staff welfare, repair and maintenance, vehicle running and maintenance expenses, business promotion, travel/local conveyance expenses, stationery, upkeep of buildings, etc., depending on the nature of payment based on the bills you could attach. This type of treatment might solve your query.