Janet: I carry a sign that has the names of the golfers in the group and their scores in terms of how many strokes above or below par they are.
Here's an article I found about a person's experience as a standard bearer, along with a picture of what the "standard" looks like (and I have no idea how that name came about):
http://www.pgatour.com/2008/tournaments/r021/05/24...
And another link, with very detailed instructions on what to do and not do:
http://www.world-net.net/home/gunnerbs/
(By the way, for what it's worth, I'm not a golfer nor really much of a golf fan, but I do enjoy volunteering each year as standard bearer for the annual LPGA tournament that is in Rochester.)