Try if these commands can show those info
1. show service loadbalancer session
2. show service loadbalancer table
3. show service loadbalancer table ipv4_ip_table_....
With the first command, you can see client IP : port and virtual server pairing (and pool member pairing on L4)
The second command will show L7 persistence session per virtual server (if you are using session persistence in the application profile).
Once you know the persistence table name, you can see the session with client IP detail using the 3rd command
The logs may have those info, but I'm not too sure about that