What to look for:
By looking at a Faculty member’s CV and talking to them as well as to their current and former students, you can get a good idea as to who might be the best supervisor for you.
A good supervisor should be able to provide you with some direction, while allowing you to take initiative. There are a number of factors that can promote a successful supervisory relationship. These include:
Figure out if you have someone who will meet your needs–one person may find a very hands-on weekly meeting approach great for scientific growth, while another finds it completely stifling. Supervisors probably won’t change their supervision style but if you know what it is you can decide whether it suits you, whether you’re willing to adapt, or whether this supervisor is just not the one for you.
Some portions snipped from McGill University, Future Graduate Students website