Dear Ratan
Whenever the lines cross, it indicates that there is a moderation effect.
The meaning of moderation in simple terms is that this relation is not the same for all the categories of moderator, rather for different categories the relationship was found to be different.
In your case, I believe that you have measured Education on metric data. The procedure makes 3 groups: education-SD (Red color in the chart), mean education (Blue color in the chart), and education+SD (Green color in the chart), which may be termed as low, medium, and high Education.
In the given chart, plz note that the slope (Regression line) for the red color is steeper than the other two and that of the green color is flatter than the rest.
It indicates that for the low education persons, as the variable 'cause related marketing' increased their 'purchase intention' increased much faster than the rest of the 2 groups.
Plz note that up to the x-axis (cause-related marketing) value of 2.2. for the green line is higher than the red line indicating that for the same value of X, there was a higher value of Y; but after the value of approx 2.2, for the same value of X, there is a higher value of Y for the red color, indicating their steeper slope.
Best wishes