Sweden does not have an Embassy in Botswana. The Embassy of Sweden in Pretoria has the main responsibility for Sweden's relations with Botswana.
Visa applications for travelling to Sweden
The German Embassy in Gaborone, Botswana is in charge of visa applications from applicants who reside in Botswana and whose main destionation in the Schengen Area is Sweden https://gaborone.diplo.de/
Swedish consulate in Gaborone
You will find contact details to the swedish consulate in Gaborone in the bottom of this page.