You can see the warmth of humanity in the faces of tourists.
Tourists are the ambassadors of human warmth and kindness.
You can see (がよく見える)the warmth of humanity(人間の温もり) in the faces of tourists. (観光客の顔に)
Tourists are the ambassadors(観光客は〜の大使) of human warmth and kindness. (人類の温もりと親切さ)
オーストラリア 
