I had to do this a while back for a 9ft tall giant image of the mask of Tutankhamun; I downloaded some program that was intended for use with slicing up images into a (seamless)mosaic to make them load faster on web pages. I then just batch-resized the images and printed each one on a different page (90 odd pages IIRC)
It worked really well, but you have to make sure that your printer driver isn’t set up to scale the image, or the little leftover bits at the edge and corner get messed up.