To have each sample on a separate track you need a file per sample. To visualize features depending on strand, you could make your tracks as bedGraph (format: chrom, start, end, score). In the score field put 1 if strand is positive, -1 otherwise. Then in IGV you can assign different colour to values positive or negative.

To split your samples in individual files you can first sort by position (sort -k1,1 -k2,2n samples.txt > sorted.txt) then put one sample per bedgraph file with score as above with something like:

prev=''
while read line
do
    sample=`echo $line | cut -f 5 -d ' '` ## Get sample id
    if [[ $sample != $prev ]]
    then
        bedgraph=${sample}.bedGraph ## Initialize new file name
    fi
    ## Output bedGraph line
    echo $line | awk -v OFS='\t' '{if($4 == "+"){strand= 1}else{strand= -1}  print $1, $2, $3, strand}' >> $bedgraph 
done < sorted.txt

(I assume you don't have hundreds of samples otherwise it would be messy)