Translation (final chorus):

So it's goodbye now, farewell
Sayonara Nakamura ["Goodbye, Nakamura"]
Kimi ga, nemuru chi ["The land where you are sleeping"], Nishi Australia ["West Australia"]
Mo kailenu* sokoku ni ["native country to where you can no longer come back"] Itoshiki furusato ["my sweet home (land/town)"]
Sayonara, Sayonara, Nakamura.

*kailenu: "kaerenu" would be better

Ted Egan's recording (sound clip & lyrics) is HERE. Here are photos of Japanese cemetery with the lyrics.

~Masato