Not a simple question!
SMS Wolf was originally the 'DDG Hansa Wachtfels', a cargo ship of the 'Rappenfels' class of 7 ships, DDG standing for Deutsche Dampfschifffahrt Gesellschaft "Hansa" or German Steamshipping Company "Hansa".
There is a website with many photos of these ships:
http://www.ddghansa-shipsphotos.de/wachtfels100.htmThe only plan I found coming very close is from the DDG Hansa Gutenfels, not a sister ship but one of the preceding classes, with almost the same particulars.
Attachment:
gutenfels_hansa_bauplan_tr_426.jpg [ 64.26 KiB | Viewed 896 times ]
You can find the origin of this plan here:
http://www.ddghansa-shipsphotos.de/gutenfels200.htm#obenmore photos of the ship on this:
http://www.messageries-maritimes.org/antinous.htm