"Des enfants, des femmes, des hommes"
Please have a look at this link about contracted articles: "du", "de la", "de l'", "des", and "de":
In this case "Des enfants, des femmes, des hommes.", the plural indefinite article "des" refers to more than one countable person in an indefinite sense.
Final "s" is never to be heard as a form of plural for a noun.
In that sentence there is one "s" that you should hear: the one just before "hommes". you should hear : LAY-Z-OM But it is not because it is a plural, it is because there is a liaison with "homme" (note: non aspired H), which changes with other determiners: mon homme (MON-N-OM); cet homme (SAY-T-OM)...