As the ESC does not have 5 volt out to power the receiver you will need to supply this to it.
That is why you have an extra 5 volt battery. The switch will need to go between the 5 volt battery and the receiver.
To power the receiver you will need to modify the 3 pin longer ESC wire.
On the picture of the receiver you see GND, 5V and PWM_T.
You will need to connect the + from the 5 volt battery to the 5V from the receiver.
You will need to connect the - from the 5 volt battery to the GND from the receiver.
The ESC long wire. Connect the black wire to the GND on the receiver (the - from the battery will be here too)
Connect the red wire from the ESC to the 5V on the receiver (the + from the battery will be here too)
Connect the white wire from the ESC to the PWM_T.
The on/off switch can be connected (if needed) between the + wire from the 5 volt battery.
Maybe this will help you too.
Only pins needed are the PWM signal output.
Just add the 5 volt and ESC to it