I see there are several Joseph Schneider listed - so I looked at where they were in1916 and they were township 15,16,17 Range 1,2,3, W 3 Meridian
This seems to fit for him.
Schneider, Joseph Ludwig NE 26 16 2 W3
There is also a listing for a Louis Schneiderand several for Nicholas (various spellings) I see it costs $15.00 for each record.
I googled Truax and wikipedia says it now has a population of 12 people, in 1970 it had 70 people. It is considered a hamlet as it does not have enough population to be a village. So I am thinking it may be that it does not have its own cemetery.
It also says it is 80 K southwast of Regina and 75K southeast of Moosejaw and is equidistant between Radville and Moosejaw.
So I suppose Joseph could be buried in any cemetery within that area.
Here is a link to the Saskatchewan Cemeteries Project - lots of cemeteries listed with the transcriptions - maybe you can have some luck there