What direction to place electrolytic caps for AC coupling?
Use of electrolytic caps makes about no sens for Ci1 and Ci2 and only for Co if your Vcc is hundreds of volts. ie the leakage characteristics of an ecap will trash any precision you may hope for (and quite a lot that you don't hope for.)

And, 0.1 uF is such a small value for an ecap that you probably need a special licence these days to buy one, if anyone stocks them. 

BUT

Ci_connected_to_Vin (components should have unique names) will have net unipolar noisy DC applied as long Vin &lt; Vcc /2 so it is not seeing true AC so a polarised cap can be used, although why you'd use one there is a mystery.

Same applies to Ci_upper but more so.

Co also see a signal always above ground so can be an ecap if you must.

In all cases the ground referenced side should be negative because in use it will always be more negative.

The design of the 741 opamp ocurred a serious fraction of my age ago and they should only be handled with well insulated barge poles.

If ground was half supply instead of V- as shown- as it may be in soime versions of this circuit - then polarised caps would not be suitable at all.