Two groups of three become three groups of two
The Guajiras compás can be understood as an alternation between 6/8 and 3/4. For movement, the audible grouping is more helpful at first than the time signature: 3 + 3 + 2 + 2 + 2. The twelve underlying pulses continue evenly. Only the spacing between the group beginnings changes.
Here we use the counting pattern 12, 1, 2 | 3, 4, 5 | 6, 7 | 8, 9 | 10, 11. The vertical bars separate the groups. In this representation, twelve is the beginning, not an extra count after the end. After eleven comes twelve again.
A three-pulse section opens at twelve and at three. From six onward, three shorter sections follow, each with two pulses. So you hear two longer units first, followed by three shorter responses. This is not a change in tempo: the same amount of time passes between six and seven as between twelve and one.
These group boundaries form a basic framework, not a rule for every audible accent. The singing and accompaniment can add other accents on top of it. Still, for a first marcaje, this framework offers clear points where your movement can arrive or change direction.

