This is a Csus4 chord.

The notes are C (root), F (4th), G (5th), C (root, an octave higher) and G (5th, an octave higher.

If you move the note on the D string one fret lower, it looks like a C chord with the top note being a G (the 5th) rather than an E (the 3rd). This is a sweet sounding way to play C, though there’s a bit of a stretch between the 1st and 2nd strings.

So the chord in the diagram looks like a C chord except the E (the 3rd) on the 4th string is replaced by an F (the 4th). It’s the very definition of a sus4 chord because there’s no 3rd and the 4th is added.

Since there’s no 3rd, the chord is ambiguous - it’s neither major nor minor.

Visually, one way to identify the chord is to recognize that it looks like a C, except the note one string higher than the root is on the same fret as the root. Since the 4th and 5th strings are a fourth apart, this can immediately tell you this is a sus4 chord.