Here are some options:
* Phonetically similar: You could use a Swahili name that sounds similar to Haley, like "Hali" (meaning "state" or "condition").
* Meaning-based: If Haley has a meaning in English (like "meadow" or "healthy"), you could find a Swahili name that represents that meaning.
* Transliteration: You could transliterate Haley into Swahili letters, which would be "Heili". However, this might be difficult for Swahili speakers to pronounce.
Ultimately, the best way to name Haley in Swahili depends on your personal preference and the context.