This is a touchscreen notebook - not a true digitizing tablet. You can use a capacitive stylus (these generally have a broad, soft rubber tip), but not a true active stylus - the ink features/pressure sensitivity that come with a true digitizing screen are not present on your system.
Very few 17" systems are going to have a true wacom (or equivalent) digitizer -- not many 15" ones do, either. You will find much more choice in the 12-13" market - if you're looking for it from Dell, the only model you'll currently find is the XPS 13 9365.