Oxymoron is a type of figurative language used when trying to illustrate a rhetoric point.
Here, it is obvious that Queen Elizabeth had a purpose for saying this quote.
What she <u><em>did not</em></u> do was compare two objects (simile or metaphor), give inanimate objects human qualities (personification), use words of noises (onomatopoeia), or use words that start with the same letters (alliteration.)
