I do not have an 8025 TG in front of me right now and that control has not been manufactured by many years, but it is easy never the less.... simply choose graphics in either the dry run or execution mode..... I recommend you start in dry run and execute your program in its entirety, then if it does not show-up on the screen...... hit the zoom sof key and then via the "+" or "-" keys zoom out until you see the graphics and then using the arrow keys key over in front of it.... zoom back down and press enter, this will reset your area definition for graphics and you can now see your graphic.
If you still have problems, call the Fagor Service department. If in the USA, call 800-423-2467 and ask for CNC service. If in Canada, call 905-670-7448 and ask for service as well.
I hope this kind of helps.