This is what my mother-in-law did once, and it was easy to carry and kept the turkey hot. Right after cooking the turkey, she transferred it from the roasting pan to another large pan. It has to be deep enough to hold any juices from the turkey. She wrapped it all completely in a couple layers of foil, then put the pan into a laundry basket that had been lined with bath towels. She then placed another couple of towels over the turkey, tucking them around the bird to cover it and hold it in place in the laundry basket.
Although now that you can easily buy those insulated bags to keep things hot, like @jaytkay pointed out, that might be easier.
Whatever you do, make sure you also keep the juices from the roasting pan to make gravy! Pour them into a tupperware container or something and take them along with the turkey!