The bus station is close to 1.5 to 2 km from Brahma Temple and you'll get buses to Ajmer every 15 mins, the ticket costs Rs 14 and the journey time is 30 minutes. The bus will travels through various parts of the city including near Ajmer Sharif Dargah and finally reaches Ajmer bus stand. From here you'll get buses to a lot of Major cities in the vicinity and shared autos to within the city and railway station.