Dear Swati,
The simplest difference is that IT recruitment is for IT industry and non IT recruitment is for NON IT Industry!!! ITES(IT Enabled Services) recruitment is usually need peple with specific call centre experience.
To explain in more detail:
IT recruitment requires domain Knowledge of Software industry only. eg. Knowledge of SAP,JAVA, C C++ etc.
Non IT recruitment is a vast subject as it covers all industries that are not software industry . Eg: Engineering, Financial institutions, Banks,Chemicals, Automobiles, Logistics, Shipping to name a few.
This type of recruitment needs industry specific domain knowledge.
Hope this is useful
Regards,
Anand