Nsl is 45 kms by road from SNSI temple. But trains takes 3 hours to reach SNSI where as if u go by bus(Samstan bus) from NSL, you can reach faster n convenient.Mostly, they have connecting bus from NSL to SNSI temple for Ajanta Express. They have for this train too.
This is strictly my opinion and results might vary when you give a try.
Thanks.