。
She seems like an easygoing person.
Literal
She [topic-は] easygoing person [seems-like-のようだ].
気さく ('frank, friendly, easygoing, approachable') is a na-adjective describing someone who's easy to talk to — relaxed, open, not standoffish. ~のようだ ('seems like, appears to be') is the evidential of choice when the speaker is making a judgment based on impression rather than direct evidence; it pairs neutrally with both nouns and clauses. Compare it to ~らしい (more 'apparently, by report'), ~みたい (the colloquial counterpart of ようだ), and ~そうだ (visual evidence based on appearance).