The answer depends on your source of GPS data. For example, if the data is coming from a GPX file, you can use the gpxread function from the Mapping Toolbox.
You can then use functions like geoplot, geoscatter and geobubble to display the data. Additionally, if you have the Automated Driving Toolbox, you can use geoplayer to visualize a stream of GPS data.
If you have a different source of data, let us know what it is and we may be able to provide a better answer.