How to set selinux permission for non-standard mysql bin log path? By default, mysql bin log works in folder /var/log/mysql. but moving to any other share such /mylogs/mysql gives permission error. 

Below is the exact message:

usr/sbin/mysqld: File '/mylogs/mysql/mysql-bin.index' not found (Errcode: 13 - Permission denied)

how to fix this without disabling selinux?

There is similar problem in the link below but solution is not acceptable as I cannot disable SELinux. 
mysql bin-log.index not found
To set mysql selinux on a directory you can:

semanage fcontext -a -t mysqld_db_t "/yourdirectory(/.*)?"

then

restorecon -Rv /yourdirectory

Also check the mysql user has permissions on your directory:

ls -l

Set permissions if needed:

chown -R mysql:mysql /yourdirectory