Thank you for asking your question at DoctorSpring.
E Coli 0157 does not occur naturally in humans.
And yes one can get E Coli 0157 infection from another person faces if he/she is infected with E Coli 0157. (And won't get if the person is not infected).
I hope this is clear. In medical terms this is called feco oral transmission. And this is a pretty common mode of disease transmission in humans, even though you will not be aware of it. So you can theoretically get any of the diseases which are transmitted via feco oral transmission by accidental exposure to faeces.
A cursory Google search will give you the list of feco orally transmitted disease. (hepatitis A , salmonella , shigella . Giardia , pin worm infections are some examples) I am not repeating it here because as it is redundant.
Please feel free to ask followup questions,
Hope this helps.