It will likely spend most of it's day closed up, although with my 4 colonies, they tend to react more to food than light. Light just seems to be a trigger to tell them to close up. Once I get them to open again with food, they will stay open for hours.
Find a place (under an overhang), and let it be. Spray juice from meaty foods across it several times a day, especially at 'dusk' and it will start opening in a few days. Then you can actually feed it. Don't move it around, they get very ****ed off.
If the coral was in good health, you it can last quite awhile without being fed, so patience is your key. Once it is open, you will want to feed it several times a week by spot feeding meaty foods, mysis, whatever...
I am not sure what flavor your suncoral is, but the degree of ****yness seems to be Yellow>Orange> Green>Black...meaning yellow are the most forgiving and black are the least.