She truly is a teacher we all admire.

Literal

She [topic-は] really us all [subject-が] admire [like-ような] teacher is.

私たちみんなが賞賛するような教師 — a relative clause with ような creating 'the kind of teacher that everyone admires.' 賞賛する (しょうさんする, 'to admire, praise') is formal.