Hey aspirant!

Get in touch with the alumni students and college authority through LinkedIn, drop your CV to them with a clear stated purpose of guest lecturer. I'm sure you'll get your way around.

For example you can apply in

National Institute of Technology Raipur.

Guru Ghasidas Vishwavidyalaya, Bilaspur.

Bhilai Institute of Technology, Durg.

Government Engineering College, Raipur.

Pt Ravishankar Shukla University, Raipur.

Government Engineering College, Bilaspur.

Rungta College of Engineering and Technology, Bhilai.

Hope this helps!