Yes, take the graph and make it an image to put into layout should work.
The following LT code will export the active graph as png and insert it to completely fill a new layout page.
int nw = page.width;
int nh = page.height;
expG2img path:="%Y" res:=600 name:=test1 type:=png;
win -t layout;
//make layout size matching the graph
page.width=nw;
page.height=nh;
//make layer in layout to exactly fill the page
layer.left=0;
layer.top=0;
layer.width=100;
layer.height=100;
string fname$="%Ytest1.png";
//insert as layer background
insertImg2g type:=img xyp:=2;
page.zoom=0;//reset to full after size change above
page.viewpaper=0;//no need to show the laytout border around the page
You can use
insertImg2g -h
in script window to read more about this XF.
CP