‘Shining’ might be rather strong word. In the image, Earth is a faint white speck, top-center-left, just above the dim glow of twilight near the Martian landscape. Can you see it? We couldn’t. Luckily, NASA supplied an image with a pointer, see below.
The image was captured about 80 minutes after sundown on the rover’s 529th day, or sol, on the red planet. Curiosity and Mars were about 160 million kilometers (99 million miles) from Earth at the time.